Fuel economy for 6.0L gas engine on 2011 gmc sierra HD

i just traded my 09 6.0 liter silverado in for a 2011 duramax dieasel wow i should have done this a long time ago ,,what a truck will never own a gas job again i can surely justify the 8000$ dollar option for the duramax and the allison automatic,,,go test drive one youll deffinetly want one

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What fuel economy do you get on that duramax? City? Highway?

Where I live in Canada, there's a huge price difference to go from the 6.0L gas to the 6.6L Duramax diesel. I was quoted $44K on the road for an ext. cab SLE with the 6.0L gas and $55K for the diesel version. An $11K premium is a lot. You have to wonder if the fuel savings will offset the initial extra cost and the higher maintenance costs on the diesel.

Apples to oranges:
I have an 2001 GMC yukon xl 3.42, 5.3, get 20.7 consistant mpg on road trips, 15's local, can tow 8900 lbs. I see a lot of 2500's out there never using their full capacity most of the time, but always draining their owners wallets at the gas pump.

I ,Mr Fing Ford just drove my first duramax crew Dually 3500. **** guys 40-80 in 2 seconds flat, NO LIE! Its saying a 36 gallon tank will produce 680 miles!!! That's 6-8 miles per gallon more than my 04 6.0 diesel Dump! I might have to buy two of these! Quiet as hell, loaded at 60,000 but with loyalty (08 Suburban)and rebates blahblahblah for 60,000 I'll get a free plow and 2 DVD players! I felt good driv ing that SOB today! Oh FYI my 04 2500hd used to get almost 400 miles to a tank. (33 gallons) now it gets like 300 so I gotta do a little general maitainance to the motor. And that's after dumping over 10000.00 into it over the last year. Everythings new Tranny Transfercase, Starter, alternator,idler arms,manifolds,fuel lines ,brakelines ,rotors calipers brakes,E-brake shoes ,backing plates,shifters linkage,rods,ujoints, tires,!and its only got 65,000 on it! Mustve over worked it!BIG STEVE B CT STRENGTH WSLPosted via Mobile Device

Apples to oranges:
I have an 2001 GMC yukon xl 3.42, 5.3, get 20.7 consistant mpg on road trips, 15's local, can tow 8900 lbs. I see a lot of 2500's out there never using their full capacity most of the time, but always draining their owners wallets at the gas pump.

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2001 Yukon w/5.3L and 3.42 gears can tow a max of 6900lbs; with the 3.73 gears it gets bumped up to 7900lbs. If you're towing over 3.5 tons, you're running illegal, even if the truck can handle it. Get into an accident and it's found that you were running over your respected weight ratings, you can be at fault even if the accident itself wasn't your fault, you weren't suppose to have been there in the first place. Just to warn you, as I've seen it happen to many a good folk over the years. I even had a large RV dealer tell me that I can tow a 5th wheel with my Durango (SUV!). I left.

It's not about towing and mileage with a 3/4 ton. It's about axle and gross weight ratings. Picking up a cubic yard of salt for instance ain't gonna cut it in a half ton SUV, or truck for that matter. Snowplow? You'll be overweight on 98% of half ton models unless the driver is less than 30-80lbs, not the usual 200+ pounds these days. Axles and gears aren't as durable in half tons for regular hard work under regular loads.

I've achieved 18mpg on an older 2002 Sierra with the 6.0L V8 at 60mph. Driver over that and mileage plummets with heavier trucks to the early to mid teens, as best. Don't forget that 'highway' mileage is very vague unless the posted also posts an average driven speed for which any given mileage is achieved.

Where I live in Canada, there's a huge price difference to go from the 6.0L gas to the 6.6L Duramax diesel. I was quoted $44K on the road for an ext. cab SLE with the 6.0L gas and $55K for the diesel version. An $11K premium is a lot. You have to wonder if the fuel savings will offset the initial extra cost and the higher maintenance costs on the diesel.

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Well as for mileage I have seen a big difference between my 2009 2500 hd,I figure I'm getting 16-18 miles per gallon with the diesel,she is super quiet,and will work like a horse, wow 11,000 more for a diesel,sounds like a lot,,my sticker price was 52,and I picked it up for 48,this truck has everything but leather,,I did a lot of research on this purchase,weighed out all the options,and choose this route,I'm extremely happy I feel as though if you want a work truck you buy a work truck,,all the landscapes up here in Maine run diesals,,either Ford or Chevy,,and my last comment is you or your truck will only last as long as you maintain them on a regular basis,,I have a 2004 3500 dump with a 6.6 turbo diesal with 92 thousand on it runs like a champ,,we all have our own opinions but ill stick to diesals in the long run,,and I think the premium cost can be justified,,only you will know what to do ,,work them and you'll see,,Posted via Mobile Device

Well as for mileage
Well as for mileage I have seen a big difference between my 2009 2500 hd,I figure I'm getting 16-18 miles per gallon with the diesel,she is super quiet,and will work like a horse, wow 11,000 more for a diesel,sounds like a lot,,my sticker price was 52,and I picked it up for 48,this truck has everything but leather,,I did a lot of research on this purchase,weighed out all the options,and choose this route,I'm extremely happy I feel as though if you want a work truck you buy a work truck,,all the landscapes up here in Maine run diesals,,either Ford or Chevy,,and my last comment is you or your truck will only last as long as you maintain them on a regular basis,,I have a 2004 3500 dump with a 6.6 turbo diesal with 92 thousand on it runs like a champ,,we all have our own opinions but ill stick to diesals in the long run,,and I think the premium cost can be justified,,only you will know what to do ,,work them and you'll see,,Posted via Mobile Device

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Thanks for the response. Is that fuel mileage of 16-18 mpg in the city or highway, loaded or empty? Thank you.